Does anyone here have any experiences
with comersus? Good or bad

Are you refering to the 'ASP e-commerce - Sophisticated Software' found here: http://www.comersus.com/ ... or something else?

yes I am, what do you think , I am pretty impressed with the back end features,
it's too bad it just runs on Windows

Very popular ( for a shopping cart that is ) in the ASP developers community, from what I have heard it's really nice.

vpASP.com for single malls
.. or..
Webcortex.com for multisite malls

These are the best I have found (for ASP ones)

When the comersus works it's pretty good, but the problem is that it's rare when it does work. Try to get support from them and you will wait days to get it.

Try their forum and they screen all post to make sure nobody said anything against their product.

I don't care for it, but thats just me.